Hello,I’m having problem to find a solution to my issue, I make a log and receive 2 bytes as SEED, and 4 bytes are the KEY to send to the ECU in my communication, I’ll be clearer.I make the communication with the ECU, then I send a command to request the SEED, the ECU sends to me 2 bytes, then I have to send the key, which are 4 bytes are right key. What I need is the algorithm to calculate the KEY to send, since I have the SEED and the Result.